Dredging bucket



H. TOUSSAINT ET AL DRBDGING BUCKET Filed Sept. 19. 1922 Patemed Dec. 25, 1923 Mira HEINRICH TOUSSAINT, OF KIEL, AND HUGO FLUCK, 0.1 HAMBURG, GERMANY, AS-

SIGNORS T0 DEUISCHE VERKE KTIENGESELLSCIEAFT, DE BERLIN, GERMANY, A.

CORPORATION DE GERMANEZ.

DREDGING BUCKET.

Application filed September 19, 1922. Serial No. 589,090.

T0 all 10 720m z't may c0nrn:

Be it known that we, HEINRICII TOUSSAINT and HUGO FLUCI both citizens of the German Repub1ic, residing at Kiel and Hamburg, Germany, respectively, have invented new and useful Improvements Relating to Dredging Buckets, of which the following is a specification.

This invention relates to improvements in connection with that type of dredging bucket which is provided with a pivoted guide arm.

Ordinary dredging buckets pivoted by an inclined rear wall to the gu1de arm and tilted by a rope attached to the bucket have the ob]ection of opening unintentionafly when the bucket is in its lowermost position so that thereby dredging capacity is reduced, while in the uppermost position of the bucket the inclined bottom of same hinders the dischargng operation. A further objection is that but little mechanical power exists for keeping the bucket closed seeing that this is efiected almost alone by the weight of the fiap of the buoket.

According to this invention the aforesafid objections are avoided by hinging the bucket to the rear or outside of its rear wall whichisimteg1al with or rigidly fixed to the guide-mm, and by attachimg the lifting cable above the guide-mm to an extended lug rear ward of the hihge-pin of the bucket. With the parts disposed in this manner, it will be noticed that the suspending moment and the force applied for opening the bucket produce tu1ning moments in opposite directions, while the closing of the bucket is effected by the pull of the lifting cable in a very reliable manner.

The accompanying drawings show an embodiment of the invention.

Figures 1 to 4 are side views showing differont positions of the bucket; and Fig. 5 is a side e]evation Of a dredger provided With the improved bucket arrangement.

The guide-mm S is rigidly connected to the rear wall R of the bucket. On the outside of the rear wall is the hinge-joint B on Which the movable b ody of the buoket turns. The movable part of the body of the bucket has its point of suspension A at the rear of its hinge-jcint B, the suspension being formed by the attachment of the cable H. On the body L of the bucket in the forward direction of the hinge-j0int B is the point C for the attaohment of the relief cable 0, while the cable H gives the pull for the dredging operation and for keeping the bucket closed. For opening the bucket it is necessary to pull the cabze 0 and then hold 1t fast, whilst releasing the cable H.

As Will be seen at Fig. 5 the relieving cable 0 is wound on the drum T, while the suspension cable is wound on the drum F. In coupling together these two drums and rotatmg same at equal speeds, the bucket L will be raised or lowered without causing relative movement between the body L and the rear Wall E of the buaket, In disengag mg the drumcoupling or clutch, the two cables can make a relative movement for opening or for closing the bucket.

Fig. 1 shows the bucket in its lowermost position at the beginning of the dredging operacion, when the resistance to the diggmg-edge D, the weight G of bucket L and the pull of the cable H produce turning moments in clockwise direction composed as follows: D906; Gs; Hava; which close the bucket.

Fig. 2 shows the bucket filled as it emerges from the dredging operation. Here, as in Fig. 1, the digging edge and weight of bucket and its charge produce clookwise clirected moments and keep the bucket closed. Any tendency by the weight of the charge to force the bucket L away from its rear wall B is strongly opposed by the clockwise directed turning moment ofthe lifting cable H, being: Hava. The more heavy may be the dredging charge, the stronger will be the pull of the lifting cable and the result is greater clo sing power.

Fig. 3 shows the bucket in its middle position opened by the relief of the pull from the lifting cable H and the suspension of the bucket at C. The opening of the bucket may also be efiected by a direct pull of the cable 0. In both cases it is quite easy to 0btain a quick or a slow or a partial opening and closing of the bucket.

Fig. 4 shows the bucket in its most elevated dischargin position. In this position also thefaei ity for opening and closing the bucket are the same as explained With reference to Fig. 3. The emptying of*the bucket coeurs in-a reliable manner, beoause the inclined rear-wallflRassumes not nearl the angle xvhefe s1iding stops, sothat even sticky material can slip ofi'. r

In placing the, point A. rearward of the hinge-jhit, the the weight of th'bucket with its chargeand the digging effort togecher produce a clos- 7 10 ing action. In disposing the relieving cable O, forward of the hinge joint B, at

'the point C the time for opening and -olos ing and the extent of opening can be roadily regulaced. 'By s1ackening'the cab1e II at 1 i-ts point of attaohment A it is'a1so possible to open th bucket withoutpfling the sable,

pull of the lifting sable H,

in allowing the weight of the guide-arm and rear wall to come into efieoc.

Weoiaim: 7

- The oombinattion with a guida rifi having a rigidly fixed rear-wall and a 111g projecting at right angles .from the arm and the said wal1, of a d1edger bucket, a hinge joint for thbucket onsaidilug, eXteniongof the sides of the buckt'rearward of itshingejoint, a lifting cab1e fast to said extensions rearward of the bingo-joint, and a relief eab1eattached -to the bucket in .aforward point of the hingejc int, as and for the pur pose stated. 7 :-HEINRIH TOUSSAINT. ;HUGO V 

